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DESIGN TRENDS IN LIGHT RAIL VEHICLES

Because articulated trams offer a number of technical and operating advantages over single cars, their popularity is increasing. Power ratings of 10 kW/ton are now considered desirable to give 1.3 meter per second acceleration and a top speed of 80 km/h. Chopper control is more costly and heavier than switched resistances, and it can only be justified when regenerative braking raises the level of energy saved to around 30 percent.